Railway vehicle truck



July 27;, 1943. J. G. BLUNT RALWAY VEHICLE TRUCK Filed April 11, 1942 4 Sheets-Sheet 1 July 27,41943. J. G. BLUNT RAILWAY VEHICLE TRUCK Filed April 11, 1942 4 Sheets-Sheet 2 LOI /N VEA/TOR J'ames iB/unf M@ y .-1 TTOR EY July 27, 1943. J. G. BLUNT RAILWAY vEaIcLE TRUCK Filed April ll, 19.42 4 Sheets-Sheet 3 NVENTOR Jmes GB/Mnf B fwd A TTU NEY July 27, 1943- .1. G. BLUNT 2,325,468

` RAILWAY VEHICLE TRUCK Filed April 11, 1942 4 sheets-sheet 4 l I l I I wl 0N m,

Patented July 27, 1943 il N ETE Y 2,325,463A n i j l RLWAY- VEHICLE 'RUCK A James G. B'lulnt, ASeheneetadfy;YN'QYf., assignerv American Locomotive Company, New York,

N..Y.`, a corporation of Ne'W`ZYorlr" Applicationnprilf171, isiaaseriai Nu 438.543: s cian-'ns'. (ci. 10s-Iasi This invention .relates Lto railwayvehicle trucks, and more particularly to a sixwh'e'el` welded truck. having a two-Wheel and i a four-'Wheel' parts and ashort wheel b'ase'; the tru'ck-fbeing.

provided'withl means ieff eating longitudinalalignment of the two'sections when` on curved or)l tangent track.`

A'further object is'toi provide a six=wheeltruckl having a four-Wheel and aftw'o-Whe'el-sectienr f connected together, the construction loiithetruck being such that the vtruck has universallycushioned exibility, an'd'is adjustableV tozalll mis-falignrnent causesvvhen traversingtlie "right of l Way such as Ywill most`` perfectly 'conformit'and' coordinate its movement with?-natures'ilav'fsoil motion and force,` the tr'uckI bein'giadaptd lto befV operated in either direction -andto'glide through l all fsp'eciiied variations of Itrack curvature, equal# izing and` tnus reducing'to ai minimum Wh'eeL flange and hub" binding*pressures."resultingftroniE centrifugaland 'other'disturbing'forces. p l

A further'object.isv toprovidefan in'iproifed spring rigging :for the aforesaid sixwheelltruok.' Y

A further object is to provide a Weldeditr'uck fabricated byiemploying an"imprvedrnethodof welding insuring great Swei'gl'itcarryingistrength;4 Azfurtherobj ect is to provide a'siX-Wheell truck.

having :an improvedlateral"Inotion centerplate' device.

Other and; further objects of i this' invention will appearfrom' the zfollwi-ngffdescription; thef accompanying drawings andth'e appended claims:-

Referring to the vdrawings forming apartof ent invention, .parts being' lir'idicatedliriL zdot andi dash lines;` Fig.'2 is a vertical sectionfo the' trucky tallienfon the ]i1e"II'-II"0 'Fig'. 1', parts' bng indicated` inY dot and' 'dasli' lines 'and' parts bein;`

v Qn'v the une `viel-vr off Fig; s; andtparny fthe" bro-'ken away; Fig.. 11, at-the'rightiisfan enlarged" elevation' of trie lateral motioncenterf'plat dei vice asy viewed from the fr0'ri`t?of-Fi`g.-10;ai'd-at theleft a section ori-'the lifne Xl-*X'If-'olE lFig.' 10;; a portion of the cross-member of `thetruckfbeing sliovvn in section; Fig. 12, atlthe` right, is an' rei-1' lar-ged elevation of the'- lateral motiot center" platdevice a's Viewed frol'nvth leftof' Fig; 10,'A and at the -left a section' on the''li' 4XII-#X11 ofY-Figillil',` aA portion 'of the crossmeinb'er'o Pthel truck being-shownflinsection'; Fig. -13 is"al`en' larged.` View' of ai portion" of i the truck showingv` the?` extreme rear part lof Athe twolvvh'eel sectioii' and: its association YWitlfi the `four-Wheel section; Figa;` 141is aplantviewfof the structure"showrrin- Fig'. 13; Fig: 1511s* afse'ction on' the'flineiXvixizA of Fig. 13; and .'Fig'swl'and- 17 areenlarged"sec;` tions onthe lnelXVI-XVIAOfvFig 1,`-Fig.16 showing thefleft half ofth'ey truck= and Figgll-" showin'g'the' right half thereof ,g partsbeing 'indi-y cated in -dot and"dash1ines'`and -partsbein'g omitted; Y i

- The six-"wheel 'truck isY indicated 'generally'fin the drawings by the reference numeral I. It? includes al fourwheel section` 2; a= separateltiivowheel section 3; av cross member 'iweldedt to the sectio'nf; l` and alateral motion center 'fplate del" vice V5lsupportedon the cross rneniber 4;; The'l truck lis adapted to move l'Witlkieiiiial'y efficiency in either direction; but'for-fthe purpose' off-the following description the'section 33W'i1lbe consid;- ered'atthe forward end` ot the tru'cli. v

Section `2i`has a rear axle' 'andan'axle 1 `forward'tliereof and formingtheltruckinterniediate axle;4 Wheels are mounted. on the axles;v There' is a separate independent side-frainef meinber- 19' on each-side of-section 2,'each-ineriiberf9 being aY built-up Welded structure made entire'ly'ofA dat plate cut and bent appropriately.l Asi-the rneiibers"-9 'lare similar except that -they`fare` iconistructed for opposite sides of the truck, a description of one will suilice, namely the one shown in Fig. 1. However, where the other member 9 is shown, the reference numerals will be applied to it.

Side frame member 9 includes two longitudinally extending transversely spaced plates I having openings therein forming pedestal jaws I I for the journals of the axles adjacent thereto. and a depressed central spring-supporting portion I2. The plates I are connected together by various transverse members welded thereto, for instance, there is a U-shaped pedestal jaw member i3 welded in each jaw II. The pedestal jaws are closed at their bottoms in the usual manner by tie bolts and spacers, indicated by the reference numeral Ill. Horizontal spring seats I5 are welded to and connect the two platesl at the upper edge of the depressed portion I2.

A journal box I5 is disposed in each of the jaws. The truck is adapted to interchangeably receive any commercial type of plain or roller bearings (not shown). The journal boxes of axle 6 are adapted to move llaterally a small extent relative to the Vside frame members, clearances a being provided between the box flanges and members I3, but the journal boxes of the axle I have no such lateral movement. In Fig. 1 the flanges of the boxes of axle 1 are shown thicker thanthose of the boxes of axle 6, preventing the lateralmovement. If desired, this thickness can be attained by welded filler pieces. The members I3 or boxes, or both, will carry welded wear plates in the usual manner.

Y A rubber centering device Il seats on top of the rear axle journal box, and the rear end of the side frame member rests on top of this device by means of the adjacent member it. Device I1 may be secured against displacement by a dowel extending into an oriiice in member I3, andV by transverse ilanges on the top oi' the journal box.

- These means are not shown in the drawings.

Device I'I may be a solid block oi rubber or other resilient material, or it may be made in alternate layers of rubber and metal plates vulcanized together. It applies increasing resistance to lateral movement of the journal box relative to its side frame member and centers same. A relatively thin block I8, which may be of any suitablesomewhat resilient material, seats on top of the journal box of the intermediate axle l and the adjacent member IS seats thereon.

Abrake hanger bar I9 extends between and is flexibly connected to the rear ends of the side frame members 9, one connection being pivotal and the other slidable and pivotal. It is of builtup welded construction and includes two longitudinally spaced transversely extending plates 20.

The slidable and pivotal connection is indicated by the reference numeral 2l and is best shown in Fig. 9. It consists of a pivot pin 22 which extends through the plates and through a block 23 disposed therebetween. Block 23 is slidably disposed in an orice 24 in a block 25 which is disposed between the plates l@ and welded thereto, the orifice in the block 25 being longer transversely than the block 23, permitting some lateral sliding movement of the block 23 relative to block 275, and preventing bar le from rigidly connecting the side frame members 9. The other end of bar I9 is pivotally secured, by another pin 22, to another blocl; 2. The pivot pins 22 permit the bar I9 to assume inclined positions during verticalrelative movements of the side frame mem-g bers. The inner plates l0 are cut away (see Fig. 2) adjacent blocks 25 to permit the plates 29 to overlap blocks 25.

There are various brake rigging brackets, lugs, etc., welded or otherwise connected to the bar side frame members il, and to other parts of the truck not yet described. As the brake rigging, other than the bar i9, is not shown in the drawings, forming no part of the present invention, these various brake rigging parts will all be designated by the same numeral 2S and no description thereof will be given. It is contemplated that a brake rigging adapted for use with either single or double brake shoes will be employed.

The rear ends of the side frame members are reinforced by a horizontal plate 2, which also supports blocks 25. At the depressed portion I2, the plates l@ form a channel open at the bottom for a purpose presently to appear.

The two-wheel section also has welded built-up side frame members, indicated by the numeral 28, only one of which will be described, appropriate numerals being applied to the other where shown. These members are rigidly connected at their forward ends by an angle iron cross bar 2li which is welded directly to the side frame members 28.

The side frame member 2B includes two transversely spaced longitudinally extending plates 30 connected by welded transverse members. Pedestal jaws il are formed in the plates 3@ which are lconnected in the jaws .by transverse plates 3l welded thereto and having formed thereon or welded thereto anges overlapping the plates 3U.

In the main, the pedestal jaws of the two-wheel section are like the rear pedestal jaws oi the fourwheel section, except that they are open above the journal box l5 disposed therein, and iormer remarks made in relation to the journal box and pedestal jaws of the rear axle 6 apply equally as well to the two-wheel section, the axle of which is designatedby thenumeral 33.

Atv its rear end the side frame member 2t is secured to a rearwardly extending pedestal piece or leg Sl which is substantially rectangular in cross section and is formed of solid bar material, legs 34 forming extensions of members 28. The plates 3@ are welded to the leg 34 in a manner to put the welds inY shear instead of in tension. This is accomplished by punching round openings 35, best shown in Fig. 3, in the plates 30 and fillet welding the inside edges of the openings to the leg. There are two or three such-openings in each plate 3i', to provide a suiiciently strong connection4 between the sideframe member 28 and the leg.

The outerplate 30 includes a depending portion 36 for a brake rigging part 25S. Otherwise plates t of a side frame member 28 are substantially similar in shape. The journal boxes of axle 33 can move laterally in their pedestal jaws similar to the journal boxes of axle 6. A rubber centering device Il rests on top of the journal box and extends upwardly between the plates 3i?.

All the devices Il provide some vertical resiliency, but principally yieldingly resist lateral movement of the journal boxes, centering them in their pedestals when lateral movement forces have terminated, as aforesaid. As only the journal boxes of axles 6 and 33 can move laterally relative to the side frame members, no device I! is needed over the boxes of the axle l. The block IB provides some resiliency vertically and is more suitable because of the limited space above axle 'I.

A spring seat 3'I rests on top of the centering 'tienepreservelsquereness i. Vmit Vertical `and tilting. relative movements be- 5d act in parallel. Y .l p i u vA semi-elliptic leaf spring 55l havingitsmain 65 'thsitloeitiidirialllr eremiti@ 'PWD Sectiorsgf tldetrock, permitting]` lllowevenvertical irel tive f2 movementfbet'viieen them., its eitreneffar iena. the ieg 34 'has weldeqjther'et block g n,

"see Figs. lf3-l5, to which is bolted 'a slfoe '8..lay Lind coni/'eff side andrear `faces.l ,The shoe itslifn a v'channel-shaped WearplateS Which sfwelded l `to the plates HJ, ahdadjacent rnember i3.. The

can pivot 'slig'htlyyde tov :the convex faces Akj similarV constructionwis secured to `leg 34latthe `rearof the pedestaljaw of the iinterrriediate aigle fl.. The foursh'oes 4'8Moftlre triickthus takefth'e Ffuf @C11 Springs. 5a. are. supnerfdfavtheirbttoms on the two spring seats l5 and are secured r4 t o-v-Wheelsection;VV "T thereto by bossesil (Fig-7).. They support the f rear end ofk leg j3.4,.in Wliich is" formed two vrecesses 52 for. housvngfthe iripper Hends "of .the

springs 5e. HSide p'latesfB are'swelded, to the sides o f the legrad'jaceriqftlienrecesses towform :retainers for thecoil springs, each plate 53 oyezf- "L" lapping .lootlireesses Bosses 54 `Welded. tp the legt@ and disposed inside the upperportionof thesprings 50 further act as retainers. Springs .leaf at the bottom, is disposedbetween the plates l@ attire depressed.portion-1 2, `It is supported i its ends by .Springhanger devicesw, see Fig. 61.

Each device ismounted, in aligned orifices 51 in,

Lthe side 'plates A flanged bpshingfs disposed` 11`..ealol'1fv orice; Withdts flange engaging the -ner faoeovfxthegadjaent platelmand with ientrely o flat plate.

" head 66 Vdispose adjaem plat@ 59- Y Th 's p ortedforit erfices',` lateral K of connection betWo-w'nl fsectio l zof the shQs,

fully appear; the mieren -n'c V166- 'rmsgne ioni 'Sfar-i further forming?. r1g1dc0m+ 1 es :on tdplof ieltical sections o the trg. so,

-J M .l .g` o say the truck 1s designed cross member llayingfa Atopp te Top plate is made in vepieces welded together, there beingra central plate v13,`and extension plates 14 adjacent each corner. overlapping the legisV 311 and extending longitudinally, as is clearly shown in Fig. l. The shape ofthe end plates 1| is clearl;T shown Fig. 7. The lateral edges butt the legs 34 and are Welded thereto, and a portion'15 extends upwardly through a slit in each plate 14 and laterally over the legs, resting thereon and being welded thereto. Thusthe vertical end plates of the cross memberrare supported directly on top of another member, in keepin-g with the general manner of construction of the truck to provide eXtra strength. The rear portions 15 extend laterally beyondthe legs 34 for supporting brake rigging parts 26, best shown YinV Fig. 7. The end plates 1| depend intermediate the legs almost to the bottom of the siderframe members. n i A plate 16 (Fig. l) extends betweenend plates 1| on each side of the longitudinal center line of the truck and spaced therefrom to form an air chamber between the plates 16, each end of each plate 16 having a portion'15 forming a support similar to the aforedescribed portion 15.k One plate 1S extends forwardly from the rearend plate 1| and at the forward side of the intermediate axle, changes its direction obliquely outwardly, as is clearly shown in Fig. 1. The` other plate 16 is similarly shaped but oppositely directed. Plates ,1S extend downwardly to the bottom of plates 1| and are cut away over the intermediate axle. AV hood-shaped plate 11 extends between plates 16 at this cut away portion forming a portion of a bottom wall 18 of theair chamber, the remainder of the bottom ywall beiner formed by plates19 .extending forwardly and rearwardly from the bottom edges of the plate 11 to the end plates 1|.V Oblique plates 8|) partition off two corners of the air chamber, as is shown in Fig. 1 to streamline the lair ow and prevent air back-hows. These plates 8E) are ,welded to the top plate 10 through slot-shaped perforations', clearly shown in Fig. l, made in the top plate. Y

The inlet to the air chamberwis formed by an elongated -central opening 8| in the top plate 10. TheY air, which is for cooling electric motors, is forced both forwardly and rearwardly through the air chamber and out openings 82 formed in theendplates 1|. e Y A Outwardly of and spaced from each plate 16 is a vertical plate 83 mounted on the end plates 1| by portions 15". Plates 83 are welded to plates 1|, 13 and 14.` A horizontal plate 84 extending between adjacent pairs of plates 16 and 83 and welded thereto forms a strong supporting structure, box-shaped in cross section, as is best shown in Fig. 6. Plate 83 only extends downwardly to the top 0f the hoodplate 11, plate 84 being in line with the uppermost portion' of plate 11 andrwelded thereto.

An oriced lug 85 depends from each plate 19 beneath each plate 16, making two pairs of aligned lugs. VTension bolts 86 connect theflugs of each pair, reinforcing the bottom of the cross member. Electric motor support brackets 81 and safety hook device parts 88 extendv forwardly and rearwardly from and are welded to the end plates 1|.

Side bearings 89, yformed of an I-beam withray plate Welded on top, are supported on and welded to each plate 14. They extend obliquely, as is shown in Fig. l. Openings 90 are formed in the end plates 1| under plates 84 to reduce weight.

soY

motors.

The truck isshown adapted to support electric However,v it may be employed as a weight-carrying truck only, if desired.

"The lateral motion center plate device 5, best shown'in Figs. lil-l2, is supported on the central plate`13 of the cross member. It includes two transversely extending roller seats 9| welded on the plate 13, one on each side of and spaced from the opening 3|. A channel bracket 92 is welded to-the plate 'i3 at right angles to the seats 9|, that is to'sayone onV each of the longitudinal sides of the opening 8| and spaced therefrom. A vertical plate 93 extending transversely of the truck is welded to the inner face of each bracket 92 and tothe plate 13, and two vertical plates 9d extend outwardly from plate 93 and are welded thereto and to the plate 13 and bracket 92. A slot 95 is formed in each plate 94.

A plunger 96 is disposed in each slot 95 as is best shown in Fig.`l0, the slots having arcuate bottoms. Each plunger has a flange 91 engaging the inner face of the adjacent plate 94 and has a flanged portion 98 extending laterally from the outer facer of the adjacent plate 94. 'Ihe plungers forwardly of the opening 8| are aligned and the plungers rearwardly of the opening 8| are aligned, and aligned plungers are connected by a tie rod 99 which passes through orices in 'the plung'ers, permitting movement of the plung- Yon vthe plungers urging them transversely of the truckrwith their flanges 91 in engagement with the Vplates 915'. Clips |62 (Fig. l0) are secured by bolts iii-3 to the plate 915| closing the top of the slots ier retaining the plungers therein, the clips having arcuate bottoms, The outer bolts |3 extend between the plates 94 forming an louter tie rod preventing the plates 94 from kbeing bent by forcesexe'rted against them.

Each roller seat 9| has teeth le@ adjacent its ends forming transversely extending racks, and a flat seat |95 between the teeth. A gear |96 is disposed in mesh with each rack. A pin |01 connects the gears in the racks oi' each seat 9|. A roller |88 is disposed on the pin intermediate the gears thereon, the roller seating on the seat |95. Pin |1 extends beyond the gears thereon and a cage |89 is mounted on these ends connecting the gears and rollers on opposite sides of the device 5 Y A center plate supporti ||l is mounted on the rollers |88. It includesa top plate rectangular in shape,` vertical walls H2 adjacent plates 93, and vertical walls ||3 connecting the ends of Wallsl l2, thus forming an inverted box.

Wear plates iM are secured both to the plates 93 and walls H2. Seats H5 similar to seats 9| and opposed thereto mount the center plate support on the roller and provide racks for the gears. The walls H9 are not as deep as the walls ||2 as is shown in Fig. ll, the cage |99 having portions extending beneath the walls H3,

A'cylindrical opening li is vformed in the top plate and a center plate ||1 is secured in vthe opening IHS` and welded to the plate The 'center-plate has a horizontal annular wall H8, a vertical circular wall ||9 extending upwardly from the outer margin of the wall ||8 and welded thereto and to the top plate and another vertical` circular wall |20 welded to and fas-eases Y `siescholing from theinner margin Vortho wall lidi-into ne @sin snaoedrelaton to the 1 all thereof. Aylmer plate iti is 'weldedto ne inne; i-acari wall lililfand aieasket- |2215' r ,to thenprer edge ofthewall lil-9;;

i. 5231s disposed. inthe openngfof wa-ll ,Y nts escape `of center :pin lubricating `oil'ingto :tbeai-r chamber. Y f

. A lug 4124 extends longitudinally from each end of each wall H2 andisfwelded thereto, overlappnetnerortions9S/.ofthe plone-ers Qs. when the center plateisincentral positiomiugs |24 have ,only Slight clearance from theV adjacent .ends .0f plllll'gers Sd so that: any lateral mo'vernentoi the center plate, will result Yin engagement of plungers on one side ,lof the truclrbradjacent llliS.. Lateral movement of the center 'plate' is permitted by the elongated opening 6l being suiiciently longer than the diameter of wall :29 and by other clearances, and positive rollingv of the rollers is effected by the gearsV ille. i

Lateral movement of the'center plate relativ to the cross-member, whether lresulting from torce ori mating in the truck or in theisuperstructure, movesjthe lugs on one side of the center plate laterally.` The'lugs 'engage the adjacent plunffers which `move laterally, compressing thesis-rings lill. `Springs lill a-re'supported bythe plungers on the other side `of the truck which cannot move laterally under such a Yforce but abut the adjacent plateskV The Springs oer an increasing resistance as the lateral mo.-

. tion increases. As the rollers and gears roll inA a horizontal plane; 'the load 'of the superstructure of the vehicle does `not offer material resistance Jcolateral movement; Y

When the vehicle in passing through curved track, theycenter4 plate mayV be moved laterally toward the outer vrain-dueto centrifugal force,

shifting the load of the superstructure to. that side of the longitudinal center'linerof Ythe truck. This puts more weight on the spring rigging at the outer rail side of the truck than at the other,

l reto. This collar `.C@minoril-Y is distributed to the fourswheel section. and onevthird to theV two-wheel section in conformity with usual practice, Y

'rne spring riggingattne forward end of' the direction without alteringany of the component roller gears from their racks. vLateral'movement. t

of the center plate is. limited.. by vthe abutment of the lugs .24 with thefadjacent ends ofthe plate 93. Y'

The entireweight of the' superstructure being transmitted to the truck is supported. on the center plate, transmitted therefrom to the cross member which, due to the spring rigging, transnits the desired proportion oi the weight to each of the axles. The axles are equally spaced longitudinally or the truck. rf'he axis of the center plate is not in vertical alignment with thegaxis or the intermediate axle but is slightly forward truck isV adapted to support its, proportioncf the load in such a manner with relation to the manner in which the spring rigging at the rear end of the truck supports its proportion of the load that the-:frame members of the two-wheel section, Lthe legs 34, and theV cross member 4,`;all `retain their horizontal position'during ,vertical movement. Thus the side bearings remain in the same horizontal plane during vertical movement pro,- viding improved support for the superstructure.

The aforedescribed truckis adaptable ,for use in a railway vehiclaone at'each endthereof. The truck can ,beinterchangeably operatedin either parts thereof or its attachments to thesuperstructure, and when so operated retains'ithe same degree of cushioning movements." .i

While there has been hereinbefme` described an approved embodiment oi this invention, it will be understood that many'and various changes and modiiications in form, arrangement of parts and details-of construction may be made. thereto without departing from the-spiritrof the invention, andthat all such changes andimodicatons as fall withlnthe sco-pc of the appended claims are contemplated as a part of this invention. i

rlhe invention. claimed and desired to be secured by Letters Patent is: i i

l. A railway vehicle truck comprisingv three spaced wheeled axles; side frame members con necting two adjacent axles of said three axles, forming therewith a truck section, each of said members having two longitudinal. transversely spaced walls connected by two transverse longitudinally spaced walls; and side frame members supported on the other of Vsaid axles, forming therewith another jtrucl: section, each of said members thereof having an extension provided disposed between saidwalls of and being spr ,gsupported on one of said two-axle Sectio-nime bersrior vertical relative movement therebetween, extension portions; having .lf-ts in sliding engagement with each said averse walls and the' adjacent portionsof said twoaaxle section. W Y Y 2. A railway vehicle: truck con'iprisingv three spaced wheeled axles; sideV frame members connecting two adjacent axles ci said three axles', forming therewith a truck section, each of'said members having two longitudinal transversely spaced walls connected by two transverse longitudinally t spaced pedestal 'member-s; vlandY side frame members supported on the other oi said axles, formingV therewith another truck eetion,

itudinal walls, holding sections in longi-V tudinal alignment and eieotngsquareness of said at one end on the journal boxes of one of said outer axles and a't-'theV other Vendo-n said intermediate axle journal boxes, said members being independent Vof each other; a semi-elliptic and coilsprin'g group supported on each ofsaid members, the lsprings of said groups acting in' parallel; a. semi-'ellipticand coil springglroup'supported on each of said journalbcxes ofthe other vof said outer axles, said semi-elliptic spring thereof'. being in series with the coil springs thereof;

journalboxesV of said outer axles, said blocks beingresilient laterally; transversely spaced side frame vmembers supported at one end onrthe rubberblocks of one of said outer axles and at the other end On said intermediate axle journal boxes, said members being independent of 'each other, said oneouter axle and its said journal 'boxes being adapted to move laterally relative to' said members against the yielding resistance of said rubber blocks adjacent thereto; a semiellipticand coil spring group supportedV on each ofsaid members, the springs of said groups acting in parallel; a semi-elliptic and coil spring group supported on each of said blocks of the `other or" said outer axles, said semi-elliptic spring thereof being in series with the coil springs thereof; and other transversely spaced side frame members for said other outer axle supported'on said groups, said groups acting in parallel, said other outer axle and its said journal boxes being adapted to move laterally relative to said other members against the yielding resistance of said other outer axle blocks.

` 5. A six-wheel railway vehicle truck comprising outer wheeled axles and an intermediate wheeled axle, said axles having journals; journal boxes on saidjournals; centering devices supported on top of the journal boxes of said vouter wheeled i axles; separate side frame members connecting onev oi said outer axles with said intermediate axleyeach supported at its outer end on one of said centering devices and at its inner end on one of said intermediate axle journal bo-xes; springs supported by said members; springs supported on Ithe centering devices of the other of said outer axles; other side frame members for said other outer axle supported on said springs; a cross member rigidly connecting said other side frame members; a laterally movable center plate supported on'said cross member; and a centering device coacting with said center plate and cross member, said outer axles with their said journal boxes being adapted to move laterally relative to the adjacent side frame members, said axle 'lateral movements being yieldingly resisted by said box centering' devices and said center plate lateral movement being vyieldably resisted by said coacting centering device.

6. A railway vehicle truckcomprising two outer wheeled axles and an inner spaced wheeled axle;

, side frame members connecting one of said outer axles with said inner axle, said one of said outer axles beingadapted to move laterally relative to said-members; centeringY devices disposed bev and welded thereto, having slots through which Vtween said one of said outer axles and said members for yieldingly resisting said lateral movement; other side frame members spring-supported at one end on the other of said outer axles and V'at Vthe other end on said'rst mentioned members, 'said other outer axlevbeing adapted to move laterally relative to said other'members; centering devices disposed between said other axle and said other members for yieldingly resisting their said lateral movement; a laterally movable i center plate supported onY said other members for lateral movement relative thereto; and a centering device supported on said other members .for yieldingly resisting said center plate lateral movement, said lateral movements of said outer axles and said center plate and said yielding resistance devices permitting said truck to pass through varying track curvatures and helding said axles in longitudinal alignment on tangent track.

'7. A railway vehicle truck comprising a wheeled axle; journal boxes supported thereon; side frame members supported on said journal boxes; and a weight-receiving cross member having spaced transverse vertical plates extending between said side frame Vmembers,.welded thereto, and providedV with laterally vextending raised portions supportedly overlapping the top faces of said side frame members and being welded thereto, longitudinal vertical plates spaced from each other and from said side framemembers, and extending between said transverse plates, welded thereto, and provided with longitudinally extending raised portions supportedly overlapping the top faces of said transverse plates and being welded thereto,and a horizontal plate, supported on top of saidside framemembers and vertical plates said portions extend.

8.V A railway vehicle truck comprising a wheeled axle; journal boxes supported thereon, side frame memberssupported on said journal boxes; and a weight-receiving cross member having spaced transverse vertical plates extending between said side frame members, welded thereto, and provided with laterally extending raised portions supportedly overlapping the top faces of said .side frame members and being welded thereto, longitudinal vertical plates spaced from each other and from said side frame members, and extending between said transverse plates, welded thereto, and'provided at their ends with longitudinally extending portions supportedly overlapping parts of said transverse plates and being welded thereto, and a horizontal plate, supported on top of said side frame members and vertical plates and welded thereto, having slots through which said raised portions extend.

Y JAMES G, BLUNT. 

